Kill X-LlamaStack-{Client-Version, Provider-Data} from OpenAPI spec

ClientVersion: We don't need each SDK method to support this parameter
because you wouldn't be passing a different client version each time you
make an API call.

ProviderData: although in this case, you _could_ be passing different
API keys depending on which SDK call you make, it makes for a confusing
experience. It is best to initialize the LlamaStackClient with all the
keys which are then passed in each request.

docs/openapi_generator/pyopenapi/generator.py

@@ -486,24 +486,6 @@ class Generator:
 
         # parameters passed anywhere
         parameters = path_parameters + query_parameters
-        parameters += [
-            Parameter(
-                name="X-LlamaStack-Provider-Data",
-                in_=ParameterLocation.Header,
-                description="JSON-encoded provider data which will be made available to the adapter servicing the API",
-                required=False,
-                schema=self.schema_builder.classdef_to_ref(str),
-            )
-        ]
-        parameters += [
-            Parameter(
-                name="X-LlamaStack-Client-Version",
-                in_=ParameterLocation.Header,
-                description="Version of the client making the request. This is used to ensure that the client and server are compatible.",
-                required=False,
-                schema=self.schema_builder.classdef_to_ref(str),
-            )
-        ]
 
         # data passed in payload
         if op.request_params: